[Rtk-users] R: Half Fan dataset

[gabriele.belotti.bergamo at gmail.com]

Thank you Simon this is very practical!

 

Da: Simon Rit <simon.rit at creatis.insa-lyon.fr> 
Inviato: venerdì 11 ottobre 2019 13.10
A: gabriele.belotti.bergamo at gmail.com
Cc: rtk-users <rtk-users at public.kitware.com>
Oggetto: Re: [Rtk-users] Half Fan dataset

 

Hi,

It's easy to generate, you need to offset your detector, either via the RTK geometry or by setting the first coordinate of the origin of your projection to something which makes the projection uncentered. For example, in the geometry :

rtksimulatedgeometry -n 180 --proj_iso_x 100 -o g

rtkprojectshepploganphantom -g g -o proj.mha

rtkfdk -p . -g g -r proj.mha -o fdk.mha

You can simulate from a CT image by following this example <http://wiki.openrtk.org/index.php/RTK/Scripts/ForwardProjection> .

Simon

 

On Fri, Oct 11, 2019 at 9:58 AM <gabriele.belotti.bergamo at gmail.com <mailto:gabriele.belotti.bergamo at gmail.com> > wrote:

Dear RTK users and developers,

I’m currently experimenting with FDK reconstruction and I’m struggling to find a Half-Fan projection dataset to fiddle around.. Do you know where I can find one? I’ve taken into consideration generating a set of DRRs from an existing phantom. Any help or advice you can give me would be greatly appreciated, thanks!

Gabriele Belotti

 

 

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